Stable High-Power Green Light Generation with Thermally Conductive Periodically Poled Stoichiometric Lithium Tantalate

Periodically poled stoichiometric lithium tantalate was used for an efficient green light generation based on frequency doubling of a pulsed Nd:YVO 4 laser. The achieved average peak power density of 9.2 MW/cm 2 was sufficiently stable without spatial distortion of green light at 532 nm at room temperature (33°C). A small phase matching temperature adjustment (0.5°C) was required at the maximum average output power of 4.4 W owing to its high thermal conductivity.